<?php
interface Constants {
  const DATE_TIME_MYSQL_DB                     = 'Y-m-d H:i:s';

  const STATUS_INACTIVE                        = 0;
  const STATUS_ACTIVE                          = 1;
  const STATUS_DELETED                         = -1;

  const USER_GROUP_ADMIN                       = 1;
  const USER_GROUP_USER                        = 2;

  const SESSION_USERNAME                       = 'username';
  const SESSION_USER_ID                        = 'user_id';
  const SESSION_FIRST_NAME                     = 'first_name';
  const SESSION_LAST_NAME                      = 'last_name';
  const SESSION_EMAIL                          = 'email';
  const SESSION_USER_TYPE                      = 'user_type';
  const SESSION_USER_GROUP_ID                  = 'user_group_id';
  const SESSION_SLIDE_COUNT                    = 'slide_count';
  const SESSION_SLIDES_VIEWED                  = 'slides_viewed';
  const SESSION_QUESTION_COUNT                 = 'question_count';
  const SESSION_QUESTIONS_RESULT               = 'questions_result';
  const SESSION_QUESTIONS_CHOICE               = 'questions_choice';
  const SESSION_IS_USER_PASSED                 = 'is_user_passed';

  const TEMPLATE_IMAGE_LEFT                    = 'IMAGE_LEFT';
  const TEMPLATE_IMAGE_RIGHT                   = 'IMAGE_RIGHT';
  const TEMPLATE_IMAGE_NONE                    = 'IMAGE_NONE';
  const TEMPLATE_IMAGE_ONLY                    = 'IMAGE_ONLY';

}